Fireless cooker.



No. 876,858. PATENTED JAN. 14, 1908. W. G. CLINGEN. i FIRELESS COOKER. APPLICATION FILED APR. 15,1907. gVSHEETSSHET L nrwww .x

w. o.' GLINGEN.- FIRELBSS oooKBR. APPLICATION FILED APR.15,1907.

PATBNTED JAN. 14; 1908.

2 SHEETS-SEEET EPL l .5:1

placing it Within the cooker,

rrr rio WILLIAM C. CLINGEN, OAF 'LAKE BLUFF, ILLINOIS, ASSIG-NOR TO THE FIRELESS COOKR COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

rmELEss Coenen.

5 vented a certain new, useful, and Improved @Fireless- Cooker,l of which the following is a full, clear, and exact description, such as will ,enable others skilled in the art to Which it appertains to make and use the same.

` My invention relates to cooking apparatus v and has s ecial reference to improvements in devices o the class knownas fireless cookers.

1' A tireless cooker in its simplest form comrises nothing more than a non-conducting or eat'vretaining receptacle ada ted to contain a vessel holding food that has een previously 1partially cooked. In using these devices the ousewife ltakes the vessel containingv the partially cooked foodl from the stove 'and uickly closes the latter. The thick non-con ucting Walls of the cooker serve to` retain the heat and within a feyv. hoursthe food is found to have been thoroughly cooked vby the retained The object of my invention is to provide a iireless cooker of simple and economical construction and which shall more efi'ectually retain the heat of the partially cooked food 3o placed therein, thereby insuring the com# vplete cooking of the food and keeping it Ilot until ready to serve.

With 'these objects. in view'my invention .i consists generally in a reless cooker' that comprises a receptacle which is open at the 40 tially cooked hot food, the cooking of which is to be completed; the construction being suoli that the vapors from the food are prevented froin escaping from the closed receptacleand furthermore maintained in the condition of vapor foral long period of time Athrough the prevention or retardation of the radiation of heat from the receptacle.

Further my invention consists in afireless cooker, of thefore oing description, provided 5,0 with a bell which as a heat retaining top or upper end'. And further, myl inventionconsiste in an arrangement or constructionof` bells or traps which permits several vessels lto be placed in a single open-topped fireless cooker.

Specicationfof Letters Patent, Application filed April 15, 1907. Serial No. 368.268.

jacket, 2, having a bottom 2.

Patented Jan. 14,1908.

My invention also consists in various details of construction and in combinations of parts all as hereinafter fully described and particularly pointed out in the claims.

The invention will be more readily understood by reference to the accompanying drawings forming a part of this specication and in which Figure 1 is a vertical `section of a tireless cooker embodying-my invention; Fig. 2 is a similar view showing-a cooker receptacle divided into several compartments; Fig. 3 is .a similar View, of a modiiication of the cooker shown in Fig, 2 Fig. 4 is a cross section on tlieline X-bX of Fig. 3; and Fig. 5 is a sectional detail, upon an enlarged scale illustrating the preferred construction of the top ofl the bell oi' trap, shown in Figs. "1 and 2.

In the drawings A represents the main portion or body of my improved fireless This/is closed at the bottom and to receive a kettle or other as indicated by cooker. open at the to vessel containing food, dotted lines in Fig. l. l

B is the complementary part of the cooker comprising the closure vfor the part A. The two parts or members A and B com lete the device, but'for convenience in han lingit, I prefer to provide it with an outside cover, C, having a handle, C', and fastened upon the body portion, A, by suitable'nieans, suoli as the hasps, C, of Fig. 3. The body A coniprises the metallic rece tacle proper, l, havv ing a bottoni, 1,'and t ie outer rece .tacle or T e space between the receptacles land 2 is filled with insulating material, such as mineral Wool kor asbestos 3. The upper end of the annular space is closed by a ring. Aftervthe nonconducting packing, 3, has been inserted, all

4the joints are soldered to make the space air tight. If desired the upper edge of the jacket, 2, .may extend abovethe top or edge,-2, to

receive the cover, C, or the upper edge may be out down as shown in Fig. 3, in Whi case the outer cover, C, tits down over the jacket, 2.

Il desired the cover may-be entirely dispensed With,l as the'closure, B, effectually prevents radiation of heat from the receptaele, making the cover,-C, unnecessary exlcept for the better.v finish 'andappearalrce which it gives the device. v

I prefer that the, receptacle, l, shall be cross section.

cylindrical in form, but it is obvious that 'it may partake of other forms in horizontal I make the closures, B,"in" several forms to adapt them to different uses andl have hereinshownthree ofvthese forms.

Referring to Fig. 1, it will be noted that the closure, B, comprises a bell or trapwhich is open at the bottom and closed at the top. The sides of the bell or trap comprise the sheet metal cylinder, 4, the u per end'ot which is closed by the disk or p ate 5. The joint between the parts 4 and 5 is closed bv means of solder or thelike, making the bell steam tight at the top. In this particular instance (Fig. l), and in order that the top of the bell may be insulated, I prefer to form the plate as a shallowpan having upturned flanges, 5', and outturned flanges, 5. The upper edges of the cylinder, 4, are, conn veniently, soldered to the eri heral flange, 5', of the top plate, 5. T e siallow pan is lilled with insulating material such. as min-v eral wool, 6, and the top'is closed by a plate or disk, 7, the edges, 7, of which are formed or seamed around the flange, 5. The details of thls structure are liest shown 1n Fig.

. 5. The flange thus formed upon the top oi' tacle over the vessel therein.

the bell rests u on the top or u )per edge of the body, A, c csing the joint etween the body, A, and the closure, B. The cylindrical portion, 4, of the bell extends nearly,l or

remaining figures of the drawing.

When about to use the fireless cooker, the housewife removes the cover, G, and also the closure, B.' Then the vessel, vas -V, contain-y Y,

ing the partially cooked. hot food is taken from the stove and is placed in the receptacle, 1. As quickly aspossible, the bell or closure, B, is pushed down into the rece It will be o ivious that as the bell is forced downward in the receptacle it will expel the cold air therefrom until the flange of the closure seats itself' upon the top/vof the body, A. The heat' of t e vessel, and its contents quickly imparts the same temperature to the small ody of air surrounding the vessel within the bell or trap, but the heat is revented from escaping by the insulated site, bottom and top walls of the closed receptacle.

, The vapor which. escapes from the vesselA together with the heated air within the closed receptacle tends to rise within the bell or trap and 4linding no escape at theI top of the bell is confined in the closed receptacle.

yIt will be clear that little, il any, of the heated vapor will find its escape at the bottom of the bel, notwithstanding the fact that the bell does not fit the receptacle tightly. Furthermore,the gradual fall oi temperature within The formed, or constructed, in -the saine way.;

the receptacle ultimately causes condensadensation forms a water seal between the lower edges of the` bell and the adjacent cylindrical wall of the receptacle.

A tireless cooker of this construction will retain its heat for a great length of time and in this particular is superior to all other devices of the kind With whichl am familiar.-

It sometimes occurs that the housewife wishes to cook two or more things at a time and to permit this, I may provide the device illustrated in Fi 1 with a smaller trap or bell, B, arrange `to iit within the bell, B, as shown in Fig. 2. In such case one vessel, i. V', may be placed within the smaller trap or bell, B', after which a second vessel V, may beplaced on the top of the smaller, or lower trap, B. Thereupon the lar'er trap will be e lowered into the receptacle t. e sides-thereof :passing down at the sides'of the smaller bell lier trap. It should be noted that rthe concurnlation ciwater at the lower ends of the traps, to eflectually seal the same.

the device of Fig. l, but is provided with two small bells or traps, B, and Bb, like unto 'the trap B of Figf2. The traps, or bells, B, and Bb, are of the same diameter, and one adapted to contain a vessel, as indicated by dotted lines. The traps B, Bb," and B. are

each corn rising a top part, 8, having a depending fange, 9, and filled with non-cork ducting material, 10, the latter beine heldin place by the bottom plate, 11. Ihe side or cylindrical portion4 of the trap has an in- 'turned flange 12 at the top fitting within Ithe flange 9 of the top plate. When thus assembled -the parts are secured by means of'rivetsand solder, making a steam tight joint at thetop of the bell. Hollow disks which form the tops 4of the bells or traps illustrated, are .in effect metallic cushions filled. with insulating material. sess -a distinct advantage over the ordinary fore more sanitary. i In this connection I desire that it shall be* understood that the bell, or trap, ot my cushion, may be a simple metallic part adapted to close the receptacle, over the contained vessel;- v

As various .modifications of my invention will readily suggest themselves to one skilled in the art, I. do not confine the invention to the s eeific .structures herein shown and descri ed. l

l'laving thus described my invention I Patent; r

Al. A firelcss cooker, comprising a receptacle, openjit the top and closed at the bottom,

tion 'of vapor therein and the Water of con` depsation in both chambers effects an ac-y cloth covered cushions hitherto employed, as they may be readily `cleaned, and are there-l The device illustrated in Fig. 3 is like unto I rests upon the top of the other.' Each is claim asnew and desire to secure by Letters evase@ to contain a foodI vessel, in combination with a vapor bell or trap, open at the bottom and closed at the top, to inclose the vessel Within the rece tacle and also close the top of said receptac e, the bottom and sides of said receptacle and the top of said bell beinginstilated to retard the radiation of heat from the food, wherebT the food vapors are retained -and closing the Vtop thereof, and a larger metal receptacle. Whereto the upper edges of the first mentioned receptacle are joined, thev space between said receptacles being filled with insulating 'or noncondnctinfg material and the top of said b'ell containing non-conducting material; whereby the vapors from hot food Within the receptacleare retained and maintained therein for a longV period of time, substantially las and for the purpose specified.

A iireless cooker, comprising a metal receptacle having heat retaining bottom and side Walls, said receptaele-being closed at the bottoni and open at the top to receive afood vessel, incombination with avvapor retaining bell having a closed, heat retaining top, which closes the top of said receptacle, the

sidesor Walls of said bell extending to the bottom of said receptacle, inelosingthe food vessel therein, substantially as and for the purpose speciied.

41A tireless cooker, comprising a metai receptacle, having heat retaining bottom and side Walls and open at the top, to contain a i'ood vessel, in combination with a metal bell extending to the bottom of said receptacle and having a closed, heat retaining top, provided with a horizontal flange resting upon the top of said receptacle and closing the annular s ace between the same and the top of vthe bell, substantially as and for the pn'rpose specified.

5. A tireless cooker, comprising a metal receptacle having heat retaining lbottoni and side walls and open at the top to'receive, a

food vessel, in combination with a metal bell.

or trap 'hitting said receptacle and having a closed, nonconductingzr or heat retaining top which closes the to of said rece tacle, and a like metal bell of ess height t an the first mentioned bell, fitting Within the same and Sii also provided with a closed Vnoneendueting top, substantially as and for the purpose specified. j

4 In testimony whereof, l have hereunto' set my hand, this 12th day oi April, 1907in the presence of two subscribing Witnesses.

. l WILLIAM C. CLINGEN. Witnesses.:

A. 'W. NELSON.,

.JOHN R. LEFEVRE. 

